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* enc/trans/utf_16_32.trans: add a convert from UTF-8 to UTF-16.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29892 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
naruse 2010-11-23 20:49:56 +00:00
parent 3ab82a65d7
commit 7f38397b6c
3 changed files with 35 additions and 5 deletions
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4
ChangeLog
View file

@ -1,3 +1,7 @@
Wed Nov 24 05:40:33 2010 NARUSE, Yui <naruse@ruby-lang.org>
* enc/trans/utf_16_32.trans: add a convert from UTF-8 to UTF-16.
Wed Nov 24 03:21:35 2010 NARUSE, Yui <naruse@ruby-lang.org>
* enc/trans/utf_16_32.trans: raise error on unpaired upper

30
enc/trans/utf_16_32.trans
View file

@ -289,7 +289,7 @@ fun_si_from_utf_16(void *statep, const unsigned char *s, size_t l)
}
break;
case BE:
if (s[0] < 0xD8 && 0xDF < s[0]) {
if (s[0] < 0xD8 || 0xDF < s[0]) {
return (VALUE)FUNso;
}
else if (s[0] <= 0xDB) {
@ -297,7 +297,7 @@ fun_si_from_utf_16(void *statep, const unsigned char *s, size_t l)
}
break;
case LE:
if (s[1] < 0xD8 && 0xDF < s[1]) {
if (s[1] < 0xD8 || 0xDF < s[1]) {
return (VALUE)FUNso;
}
else if (s[1] <= 0xDB) {
@ -321,6 +321,19 @@ fun_so_from_utf_16(void *statep, const unsigned char *s, size_t l, unsigned char
return 0;
}
static ssize_t
fun_so_to_utf_16(void *statep, const unsigned char *s, size_t l, unsigned char *o, size_t osize)
{
unsigned char *sp = statep;
if (*sp == 0) {
*o++ = 0xFE;
*o++ = 0xFF;
*sp = 1;
return 2 + fun_so_to_utf_16be(statep, s, l, o, osize);
}
return fun_so_to_utf_16be(statep, s, l, o, osize);
}
static const rb_transcoder
rb_from_UTF_16BE = {
"UTF-16BE", "UTF-8", from_UTF_16BE,
@ -429,6 +442,18 @@ rb_from_UTF_16 = {
NULL, fun_si_from_utf_16, NULL, fun_so_from_utf_16
};
static const rb_transcoder
rb_to_UTF_16 = {
"UTF-8", "UTF-16", from_UTF_8,
TRANSCODE_TABLE_INFO,
1, /* input_unit_length */
4, /* max_input */
4, /* max_output */
asciicompat_encoder, /* asciicompat_type */
1, state_init, NULL, /* state_size, state_init, state_fini */
NULL, NULL, NULL, fun_so_to_utf_16
};
void
Init_utf_16_32(void)
{
@ -441,4 +466,5 @@ Init_utf_16_32(void)
rb_register_transcoder(&rb_from_UTF_32LE);
rb_register_transcoder(&rb_to_UTF_32LE);
rb_register_transcoder(&rb_from_UTF_16);
rb_register_transcoder(&rb_to_UTF_16);
}

6
test/ruby/test_transcode.rb
View file

@ -1022,9 +1022,9 @@ class TestTranscode < Test::Unit::TestCase
def test_utf_16_bom
expected = "\u{3042}\u{3044}\u{20bb7}"
assert_equal(expected, %w/fffe4230443042d8b7df/.pack("H*").encode("UTF-8","UTF-16"))
assert_equal(expected, %w/feff30423044d842dfb7/.pack("H*").encode("UTF-8","UTF-16"))
assert_raise(Encoding::InvalidByteSequenceError){%w/feffdfb7/.pack("H*").encode("UTF-8","UTF-16"))
assert_raise(Encoding::InvalidByteSequenceError){%w/fffeb7df/.pack("H*").encode("UTF-8","UTF-16"))
check_both_ways(expected, %w/feff30423044d842dfb7/.pack("H*"), "UTF-16")
assert_raise(Encoding::InvalidByteSequenceError){%w/feffdfb7/.pack("H*").encode("UTF-8","UTF-16")}
assert_raise(Encoding::InvalidByteSequenceError){%w/fffeb7df/.pack("H*").encode("UTF-8","UTF-16")}
end
def check_utf_32_both_ways(utf8, raw)